sk.uniq.protobuf.parser.ProtoGenerator Maven / Gradle / Ivy

Go to download
/* 
 * Copyright 2016 Jakub Herkel.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package sk.uniq.protobuf.parser;

import sk.uniq.protobuf.parser.impl.DefaultProtoGenerator;
import sk.uniq.protobuf.schema.ProtoFile;

/**
 *
 * @author jherkel
 */
public class ProtoGenerator {

    /**
     *
     */
    public static final Options PRETTY_PRINT = Options.builder().prettyPrint(true).tabSeparator(4).hideComments(false).build();

    /**
     *
     */
    public static final Options MINIMAL_SIZE = Options.builder().prettyPrint(false).tabSeparator(0).hideComments(true).build();

    /**
     *
     */
    public static class Options {

        private final boolean prettyPrint;
        private final int tabSeparator;
        private final String lineSeparator;
        private final String header;
        private final boolean hideComments;

        private Options(Builder builder) {
            if (builder.tabSeparator < 0) {
                throw new IllegalArgumentException("Invalid tab separator, tabSeparator:" + builder.tabSeparator);
            }
            if (builder.lineSeparator == null || builder.lineSeparator.isEmpty() == true) {
                throw new IllegalArgumentException("Invalid lineSeparator, lineSeparator is empty");
            }
            this.prettyPrint = builder.prettyPrint;
            this.tabSeparator = builder.tabSeparator;
            this.lineSeparator = builder.lineSeparator;
            this.header = builder.header;
            this.hideComments = builder.hideComments;
        }

        /**
         *
         * @return true if pretty print is set
         */
        public boolean isPrettyPrint() {
            return prettyPrint;
        }

        /**
         *
         * @return true if pretty print is set
         */
        public int getTabSeparator() {
            return tabSeparator;
        }

        public String getLineSeparator() {
            return lineSeparator;
        }

        public String getHeader() {
            return header;
        }
        
        public boolean getHideComments() {
            return hideComments;
        }

        /**
         *
         * @return
         */
        public static Builder builder() {
            return new Builder();
        }

        /**
         *
         */
        public static final class Builder {

            private boolean prettyPrint =  true;
            private int tabSeparator = 4;
            private String lineSeparator = System.lineSeparator();
            private String header;
            private boolean hideComments = false;

            private Builder() {
            }

            /**
             *
             * @param prettyPrint
             * @return
             */
            public Builder prettyPrint(boolean prettyPrint) {
                this.prettyPrint = prettyPrint;
                return this;
            }

            /**
             *
             * @param lineSeparator
             * @return
             */
            public Builder lineSeparator(String lineSeparator) {
                this.lineSeparator = lineSeparator;
                return this;
            }

            /**
             *
             * @param tabSeparator
             * @return
             */
            public Builder tabSeparator(int tabSeparator) {
                this.tabSeparator = tabSeparator;
                return this;
            }

            /**
             *
             * @param header
             * @return
             */
            public Builder header(String header) {
                this.header = header;
                return this;
            }

            /**
             *
             * @param hideComments
             * @return
             */
            public Builder hideComments(boolean hideComments) {
                this.hideComments = hideComments;
                return this;
            }            
            
            /**
             *
             * @return
             */
            public Options build() {
                return new Options(this);
            }
        }

    }

    private ProtoGenerator() {
    }

    /**
     *
     * @param protoFile
     * @param options
     * @return
     */
    public static String generate(ProtoFile protoFile, Options options) {
        DefaultProtoGenerator generator = new DefaultProtoGenerator(options);
        try {
            generator.visit(protoFile, null);
        } catch (Exception ex) {
            throw new IllegalStateException(ex);
        }
        return generator.getResult();
    }
}